diff --git a/packages/superdough/superdough.mjs b/packages/superdough/superdough.mjs
index f5674f2c..4d67e038 100644
--- a/packages/superdough/superdough.mjs
+++ b/packages/superdough/superdough.mjs
@@ -253,6 +253,11 @@ function effectSend(input, effect, wet) {
   return send;
 }
 
+export function resetGlobalEffects() {
+  delays = {};
+  reverbs = {};
+}
+
 export const superdough = async (value, deadline, hapDuration) => {
   const ac = getAudioContext();
   if (typeof value !== 'object') {
diff --git a/website/src/repl/Repl.jsx b/website/src/repl/Repl.jsx
index 57bdb1d1..c5a8fa09 100644
--- a/website/src/repl/Repl.jsx
+++ b/website/src/repl/Repl.jsx
@@ -7,7 +7,13 @@ This program is free software: you can redistribute it and/or modify it under th
 import { code2hash, getDrawContext, logger, silence } from '@strudel/core';
 import cx from '@src/cx.mjs';
 import { transpiler } from '@strudel/transpiler';
-import { getAudioContext, initAudioOnFirstClick, webaudioOutput } from '@strudel/webaudio';
+import {
+  getAudioContext,
+  initAudioOnFirstClick,
+  webaudioOutput,
+  resetGlobalEffects,
+  resetLoadedSounds,
+} from '@strudel/webaudio';
 import { defaultAudioDeviceName } from '../settings.mjs';
 import { getAudioDevices, setAudioDevice } from './util.mjs';
 import { StrudelMirror, defaultSettings } from '@strudel/codemirror';
@@ -157,6 +163,7 @@ export function Repl({ embedded = false }) {
   };
 
   const resetEditor = async () => {
+    resetGlobalEffects();
     clearCanvas();
     resetLoadedSounds();
     editorRef.current.repl.setCps(0.5);
@@ -183,6 +190,7 @@ export function Repl({ embedded = false }) {
     setViewingPatternData(patternData);
     clearCanvas();
     resetLoadedSounds();
+    resetGlobalEffects();
     await prebake(); // declare default samples
     editorRef.current.setCode(code);
     editorRef.current.repl.evaluate(code);